Ottoman soldiers (16th century)

The Ottoman army included janissaries (paid warriors) and sipahis (vassal knights).

Public school in Central Europe (early 20th century)

Public schools in villages played an important role in education.

Native American settlement (Crow Nation)

The Crow are Native Americans who inhabited the Yellowstone River valley.

Common carp

Freshwater fish used as food in many parts of the world.

Constructing shapes (3D)

Building 3D shapes into a given cube mesh with the help of several views.

Vertebrate brain evolution

During the evolution of vertebrates the relative development of brain areas has changed.

How does it work? - Record player

This animation demonstrates the mechanism and operation of record players.

Ancient agriculture in the Nile Valley

Ancient Egypt was called the ‘gift of the Nile’, since the river played an important role in the rise of Egyptian civilization.

Evolution of the bicycle

The changing bicycle, at first mocked as a toy, is a true mirror of the technical development over the last three centuries.

MÁV M61 diesel engine (1963)

The legendary M61 class locomotives of the Hungarian State Railways were manufactured by Nohab.

Pearls

Certain mollusks produce pearls in order to protect themselves from parasites or debris. Pearls are used for making jewelry.

Stearic acid (octadecanoic acid) (C₁₇H₃₅COOH)

Solid, white substance, a constituent of vegetable oils and animal fats.

Mycenae (2nd century B.C.)

The city with advanced culture was the first settlement in history to have a citadel.

Nitrogen cycle

Atmospherical nitrogen is bound by bacteria and used by living organisms in the form of various compounds.

Ancient Roman siege engines

Ancient Roman conquerors had effective siege engines developed for attacking fortifications.

Ancient Roman military camp

As the Roman Empire expanded, military camps were established on the newly conquered territories.

Transport networks

The animation presents the main air, water and land routes and transport hubs.

Safety equipment of bicycles

The bicycling manual contains rules concerning the safety equipment of bicycles.

How does it work? - Ballpoint pen

The invention of the ballpoint pen made writing a lot easier.

Hemoglobin

Oxygen carrier protein in our red blood cells.

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